January Weather in Mount Pleasant, United States

Last updated: June 24, 2025

In January, the average temperature in Mount Pleasant, United States is a cool 8°C (47°F), with a minimum dipping to -14°C (7°F) and a maximum soaring to 25°C (78°F). You can expect about 101 mm (4.0 in) of precipitation over 9 days, coupled with an average humidity of 80%, making it a rather damp month.

January Temperature in Mount Pleasant

In January in Mount Pleasant, the average temperature is 8°C (47°F), with maximums reaching up to 25°C (78°F) and minimums dropping as low as -14°C (7°F). This wide temperature range suggests that travelers should pack layers to stay comfortable throughout the day and night.

January Weather in Mount Pleasant: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Mount Pleasant, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mount Pleasant, January typically has an average temperature of 8°C (47°F), with highs reaching up to 25°C (78°F) and lows dropping to around -14°C (7°F).

Data source: Temperature data for Mount Pleasant generated using information from the Copernicus Climate Change Service.

January Precipitation in Mount Pleasant

In Mount Pleasant in January, the total precipitation amount is 101 mm (4.0 in), occurring over a span of 9 days.

January Precipitation Trends in Mount Pleasant

The chart displays monthly precipitation patterns in Mount Pleasant, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Mount Pleasant, January typically receives around 101 mm (4.0 inches) of precipitation spread over approximately 9 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

January Humidity in Mount Pleasant

In Mount Pleasant in January, humidity is 80%. With an average temperature of 8°C (47°F), this humidity feels like you're walking through a heavy mist, making your clothes cling to your skin and every step prone to a shiver, which can be quite uncomfortable for traveling.

January Average Humidity in Mount Pleasant

This chart illustrates the average monthly humidity levels in Mount Pleasant, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Mount Pleasant is approximately 80%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Mount Pleasant

In Mount Pleasant in January, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Mount Pleasant for better planning.

Maximum UV Index Levels in Mount Pleasant for January

The chart shows the monthly maximum UV Index (UVI) for Mount Pleasant in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Mount Pleasant typically reaches 4, which falls under the moderate exposure category.

Data source: Mount Pleasant January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How January Weather in Mount Pleasant Compares to Other Months

Weather in Mount Pleasant varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Mount Pleasant, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Mount Pleasant, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (47°F)	101 mm (4.0 inches)	80%	moderate
February Weather	9°C (49°F)	143 mm (5.6 inches)	79%	high
March Weather	15°C (59°F)	131 mm (5.2 inches)	78%	very high
April Weather	18°C (64°F)	203 mm (8.0 inches)	78%	very high
May Weather	23°C (73°F)	160 mm (6.3 inches)	81%	extreme
June Weather	27°C (80°F)	101 mm (4.0 inches)	78%	extreme
July Weather	29°C (84°F)	75 mm (3.0 inches)	73%	extreme
August Weather	28°C (83°F)	78 mm (3.1 inches)	66%	extreme
September Weather	26°C (79°F)	80 mm (3.1 inches)	65%	very high
October Weather	19°C (67°F)	131 mm (5.2 inches)	72%	very high
November Weather	13°C (55°F)	65 mm (2.5 inches)	82%	high
December Weather	10°C (51°F)	114 mm (4.5 inches)	87%	moderate